1 



44 A. e. OUDKMANS, NOTES ON ACARI. 



genital suckers in Avalgidae, or that the second line of the 

 fourth accolade is a lapsus calami of his ; at all events Syringobia 

 lives on a vertebi-ate animal. We are refferred to : 



»5. An den Federn der Vögel lebend . . . Analginae. 



As 1 already said above, Syringobia lives i n the feathers. 

 Therefore it should have been better if Canestrini had written 

 »An oder in den Federn der Vögel lebend«. We are reffered to p. 29. 

 Integument schwach chitinisiert . . . Epidermopteae. 

 Integament stark chitinisiert 2 



Stop! What is »stark« and what is »schwach«? One of the 

 Dermoglyphinae under my examination, viz the so-called Sy- 

 ringobia chelopus série avormale, which I have rebaptized in 

 Plutarchusia clielopus, h deeidedlj »schwach« chitinized, except 

 its legs. But Syringobia chelopus at all events does not 

 belong to the Epidermoptinae. So T choose »stark chitinisiert. 2«. 



»2. Analnäpfe vorhanden und gut entwickelt . . . 3«. 



»3. Ç ohne Abdominalanhänge 4«. 



»4. Hinterbeine beim d" kräftiger als beim 5 Analgeae p. 78«. 



On p. 78 we do not meat with a genus Syringobia at all ! 

 But in determinating we find : 



»Vorderbeine nicht dornig : Pteronyssus^ 



And yet we have not made a mistake ! 



We look for Syringobia in the Index or Register; we are 

 refered to p 74, and here we observe that Syringobia is a 

 genus of the Dermoglypheae. 



We again use the keys on p. 8 and p. 29 and observe that 

 the Dermoglypheae are characterized by : 



»2. Aualnäpfe fehlend, oder rudimentär. i^er7?to<j'/j/p/<^fl« p. 70. 



But the anal suckers are well developed! What now? 



We look on p. 70 for further characteristics of this sub- 

 family and find here: • 



»1884. Dermoglypheae, Mégnin et Trouessart in J. Microgr. 

 v. 8, p. 96. — 1885 Dermoglyph's (part.) Trouessart in: 

 Bull. Soc. Angers, v. 14, p. 84. — 1896 Syringobeae Troues- 



